I am very pleased Along with the customer care. I haven't received my engine but but so far so superior. thankyouThe RB25DE cylinder head from the A31 Cefiro C33 Laurel or R32 Skyline (aka: Non VCT) might be used. The RB25DET (with the R33 Skyline or C34 Laurel or Stagea) head is likewise used, however an exterior oil feed need to be fabricated for